I agree that the U.S. should use their excess food and resources to aid third world countries if both the US and the receiving country agree to it; the enormous increase of the percentage of obese Americans recently is proof of the food overabundance. We have plenty of factories that could donate leftover products to developing countries. Many should model themselves after the NFL. I have read, for example, that the NFL produces championship tshirts and gear for both football teams competing in the Super Bowl. At the end of the game, the losing team's shirts are sent to a charity organization that ships them to third world countries (generally in Africa: Uganda, Niger, and others). Also, I worked in a grocery store this summer, so I know the large quantities of food consumers in my community can buy, and the frequency of their trips to the grocery store. Many consumers buy things just because they're on sale and they can afford them, but then they never actually use them. I therefore also agree that education (not only of people in the developing worlds, but also of the American people) is essential; these wasteful purchases could be greatly reduced if more of the public empathized with impoverished developing countries and realized these countries' need for the products more than their own need.
And yes, if amateur entrepreneurs can survive and even come to dominate the American marketplace, then the governments of developing countries could successfully improve their economies and states of existence. But in order to do so, all other developed countries need to agree not to invade the countries; they need to let them reconstruct themselves and their own cultures without the interference or influence of multiple other countries, and with however much time they may need.